Here it is.....
[Code of Federal Regulations]
[Title 49, Volume 6]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR830.2]
[Page 177-178]
TITLE 49--TRANSPORTATION
CHAPTER VIII--NATIONAL TRANSPORTATION SAFETY BOARD
PART 830_NOTIFICATION AND REPORTING OF AIRCRAFT ACCIDENTS OR INCIDENTS
Subpart A_General
Sec. 830.2 Definitions.
As used in this part the following words or phrases are defined as
follows:
Aircraft accident means an occurrence associated with the operation
of an aircraft which takes place between the time any person boards the
aircraft with the intention of flight and all such persons have
disembarked, and in which any person suffers death or serious injury, or
in which the aircraft receives substantial damage.
Civil aircraft means any aircraft other than a public aircraft.
Fatal injury means any injury which results in death within 30 days
of the accident.
Incident means an occurrence other than an accident, associated with
the operation of an aircraft, which affects or could affect the safety
of operations.
Operator means any person who causes or authorizes the operation of
an aircraft, such as the owner, lessee, or bailee of an aircraft.
Public aircraft means an aircraft used only for the United States
Government, or an aircraft owned and operated (except for commercial
purposes) or exclusively leased for at least 90 continuous days by a
government other
[[Page 178]]
than the United States Government, including a State, the District of
Columbia, a territory or possession of the United States, or a political
subdivision of that government. ``Public aircraft'' does not include a
government-owned aircraft transporting property for commercial purposes
and does not include a government-owned aircraft transporting passengers
other than: transporting (for other than commercial purposes)
crewmembers or other persons aboard the aircraft whose presence is
required to perform, or is associated with the performance of, a
governmental function such as firefighting, search and rescue, law
enforcement, aeronautical research, or biological or geological resource
management; or transporting (for other than commercial purposes) persons
aboard the aircraft if the aircraft is operated by the Armed Forces or
an intelligence agency of the United States. Notwithstanding any
limitation relating to use of the aircraft for commercial purposes, an
aircraft shall be considered to be a public aircraft without regard to
whether it is operated by a unit of government on behalf of another unit
of government pursuant to a cost reimbursement agreement, if the unit of
government on whose behalf the operation is conducted certifies to the
Administrator of the Federal Aviation Administration that the operation
was necessary to respond to a significant and imminent threat to life or
property (including natural resources) and that no service by a private
operator was reasonably available to meet the threat.
Serious injury means any injury which: (1) Requires hospitalization
for more than 48 hours, commencing within 7 days from the date of the
injury was received; (2) results in a fracture of any bone (except
simple fractures of fingers, toes, or nose); (3) causes severe
hemorrhages, nerve, muscle, or tendon damage; (4) involves any internal
organ; or (5) involves second- or third-degree burns, or any burns
affecting more than 5 percent of the body surface.
Substantial damage means damage or failure which adversely affects
the structural strength, performance, or flight characteristics of the
aircraft, and which would normally require major repair or replacement
of the affected component. Engine failure or damage limited to an engine
if only one engine fails or is damaged, bent fairings or cowling, dented
skin, small punctured holes in the skin or fabric, ground damage to
rotor or propeller blades, and damage to landing gear, wheels, tires,
flaps, engine accessories, brakes, or wingtips are not considered
``substantial damage'' for the purpose of this part.
[53 FR 36982, Sept. 23, 1988, as amended at 60 FR 40112, Aug. 7, 1995]
That part about the 25k damage to objects other than the aircraft, I got mixed up, that requires immediate notification, but is not an accident.
If only the gear collapsed it looks like it may just be an incident.